Thanks you so much ZoomKat & Oric_dan for your knowledge and helping me more understand what is required for this project i have been researching a lot already 
At the moment i have been looking at the best way to battery power the arduino Uno and as well as the 4 servos that i will be running. And will definitely take your advice.
Currently i'll been testing out a servo with the 9V Battery and i think its way too much current which i think makes the servo go crazy and won't respond to my arduino's code of having there servo rotate 0 to 180 and vice versa. Which instead rotates from 0 to 180 and gets stuck still rotating forward 
However I read about a motor shield that can be used on top of a Arduino Uno which states to make life easy with power voltage and wire configurations
Would that be more sufficient in running the 4 servos?
I found this one by Adafriuit which looks amazing and very promising